JOURNAL OF THE COLLEGEOF SCIENCE, IMPEEIAL UNIVERSITY, 

 TOKYu, JAPAN. 



VOL. XXVII., ARTICLE 8. 



Descriptions of One New Genus 

 and Ten New Species of Japanese Fishes. 



By 

 Shigeho Tanaka, Bigahishi. 



Zoologiial Institute. Science College, Imperial Uivrcrsity of Tokyo. 



With one plate. 



1. Scyliorhinus macrorhynchus, n. .sp. 



Height of body behind base of pectoral 9'i, head as meas- 

 ured to upper edge of first gill-opening 4 in total length as 

 measured to root of lower lobe of caudal. Eye 6z, interorbital 

 21, snout from anterior rim of eye If, distance between tip of 

 snout to anterior tip of mouth slightly less than 2, width of 

 mouth between angles 2^-, shortest distance betw^een nostrils 

 about 6, length of base of first or second dorsal 3f, length of 

 base of anal IJ, in head. 



Body elevated, rather slender, compressed ; nape slightly 

 elevated. Head large, depressed. Eye lateral, high up, midway 

 between tip of snout and middle of base of pectoral, but its 

 anterior rim midway between the former and third gill-opening; 

 no nictitating membrane. Spiracles subcircnlar, very small, 

 much smaller than pupil, directly behind eye. Interorbital 

 broad, gently convex. Snout long, acutely pointed, but rather 

 rounded when viewed from above ; its lateral outline gently 

 concave posteriorly and pronouncedly concave for some distance 



